Official NHA Assessment

Race 4: GALLOP FORM CLASS 4 (Open. Benchmark at 60.0kg = 82)

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Line Horse
High Queue
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
6 / 8
More than 5 points
Detailed Assessment
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Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
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1    Green Glow           3    55.0    1    0.00     8.0   88    62           62    -26
2    Master Du Rouvray    2    56.0    2    0.70     0.0   75    87           87    +12
3    High Queue           4    56.5    3    3.70     4.5   75    75           75    +0
4    Bad Medicine         3    59.5    4    4.90     8.0   82    71           72    -10
5    Total Surrender      5    56.0    5    9.20     0.0   79    80           80    +1
99   Deputy Chief         3    52.0    99   0.00     8.0   -     56           56    +0
99   Industrialstrength   4    61.0    99   0.00     4.5   -     81           81    +0
99   Luthuli              5    56.0    99   0.00     0.0   -     80           80    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Green Glow 88 92 62 +30 8.0 -
2 Master Du Rouvray 75 81 87 -6 0.0 -
3 High Queue Line 75 74 75 -1 4.5
4 Bad Medicine 82 100 72 +28 8.0 -
5 Total Surrender 79 74 80 -6 0.0 -
99 Deputy Chief - 64 56 +8 8.0 -
99 Industrialstrength - 82 81 +1 4.5 -
99 Luthuli - 74 80 -6 0.0 -
Assessment Methodology
Calculation Steps:
  1. Identify Line Horse - consistent performer used as reference
  2. Calculate WFA Allowance based on age, distance, and month
  3. Apply Drag Adjustment for beaten margin
  4. Calculate Actual Weight Performance:
    Weight - Drag - WFA
  5. Compare to Line Horse to determine race rating
  6. Apply special rules (maiden caps, layoff allowance)
Key Formulas:
  • Drag Effect: Varies by distance (see Benchmarks page)
  • 1 length ≈ 1kg at 1 mile (1600m)
  • WFA Scale: Based on Admiral Rous's 1855 table
  • Rating Points: 1kg = 2 rating points